Home / 21,457,502.70-29,689,329.50-18,709,915.60

Finding the Fourth Proportional to 21,457,502.70, 29,689,329.50 and 18,709,915.60

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Solution

The fourth proportional to 21,457,502.70, 29,689,329.50 and 18,709,915.60 is: 25,887,674.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457,502.70 : 29,689,329.50 = 18,709,915.60 : x
  2. Step 2: Convert to fraction form
    21,457,502.70/29,689,329.50 = 18,709,915.60/x
  3. Step 3: Cross multiply
    21,457,502.70x = 29,689,329.50 × 18,709,915.60
  4. Step 4: Simplify right side
    21,457,502.70x = 555,484,849,165,590.25
  5. Step 5: Solve for x
    x = 555,484,849,165,590.25/21,457,502.70
  6. Step 6: Final answer
    x = 25,887,674.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.